Both of them are mythical creatures said to be inhabiting the the different parts of the world.
Sasquatch is said to be living in North America. and Western Canada. Yeti whose physical description is similar to Sasquatch is said to be living in the Himalayas.
Both are large hairy humanoids. The origin of the word Sasquatch which is also known as Bigfoot name comes from Salish se’sxac, meaning “wild men.” It’s counterpart Yeti is also known as th Abominable Snowman.
Many people from time to time claim that they have seen them but till now there is no proof of their existence.